<script setup lang="ts">
import { getList } from "./api";
import error from "./error.png";
import loading from "./loading.png";
import { ElLoading } from "element-plus";
import "vue-waterfall-plugin-next/dist/style.css";
import InfiniteLoading from "v3-infinite-loading";
import { onMounted, reactive, ref, nextTick } from "vue";
import backTop from "@/assets/svg/back_top.svg?component";
import { LazyImg, Waterfall } from "vue-waterfall-plugin-next";

const options = reactive({
  // 唯一key值
  rowKey: "id",
  // 卡片之间的间隙
  gutter: 10,
  // 是否有周围的gutter
  hasAroundGutter: true,
  // 卡片在PC上的宽度
  width: 320,
  // 自定义行显示个数，主要用于对移动端的适配
  breakpoints: {
    1200: {
      // 当屏幕宽度小于等于1200
      rowPerView: 4
    },
    800: {
      // 当屏幕宽度小于等于800
      rowPerView: 3
    },
    500: {
      // 当屏幕宽度小于等于500
      rowPerView: 2
    }
  },
  // 动画效果 https://animate.style/
  animationEffect: "animate__zoomInUp",
  // 动画时间
  animationDuration: 1000,
  // 动画延迟
  animationDelay: 300,
  // 背景色
  // backgroundColor: "#2C2E3A",
  // 图片字段选择器，如果层级较深，使用 xxx.xxx.xxx 方式
  imgSelector: "src.original",
  // 加载配置
  loadProps: {
    loading,
    error
  },
  // 是否懒加载
  lazyload: true
});

const page = ref(1);
const list = ref([]);
const pageSize = ref();
const loadingInstance = ref();

/** 加载更多 */
function handleLoadMore() {
  loadingInstance.value = ElLoading.service({
    target: ".content",
    background: "transparent",
    text: "加载中"
  });
  getList({
    page: page.value,
    pageSize: pageSize.value
  }).then(res => {
    setTimeout(() => {
      list.value.push(...res);
      page.value += 1;
      nextTick(() => {
        loadingInstance.value.close();
      });
    }, 500);
  });
}

function handleDelete(item, index) {
  list.value.splice(index, 1);
}

function handleClick(item) {
  console.log(item);
}

onMounted(() => {
  handleLoadMore();
});
</script>

<template>
  <el-scrollbar height="87vh" class="content">
    <Waterfall :list="list" v-bind="options">
      <template #item="{ item, url, index }">
        <div
          class="bg-gray-900 rounded-lg shadow-md overflow-hidden transition-all duration-300 ease-linear hover:shadow-lg hover:shadow-gray-600 group"
          @click="handleClick(item)"
        >
          <div class="overflow-hidden">
            <LazyImg
              :url="url"
              class="cursor-pointer transition-all duration-300 ease-linear group-hover:scale-105"
            />
          </div>
          <div class="px-4 pt-2 pb-4 border-t border-t-gray-800">
            <h4 class="pb-4 text-gray-50 group-hover:text-yellow-300">
              {{ item.name }}
            </h4>
            <div
              class="pt-3 flex justify-between items-center border-t border-t-gray-600 border-opacity-50"
            >
              <div class="text-gray-50">$ {{ item.price }}</div>
              <div>
                <button
                  class="px-3 h-7 rounded-full bg-red-500 text-sm text-white shadow-lg transition-all duration-300 hover:bg-red-600"
                  @click.stop="handleDelete(item, index)"
                >
                  删除
                </button>
              </div>
            </div>
          </div>
        </div>
      </template>
    </Waterfall>

    <!-- <div class="flex justify-center py-10">
        <button
          class="px-5 py-2 rounded-full bg-gray-700 text-md text-white cursor-pointer hover:bg-gray-800 transition-all duration-300"
          @click="handleLoadMore"
        >
          加载更多
        </button>
      </div> -->

    <el-backtop
      title="回到顶部"
      :right="35"
      :visibility-height="400"
      target=".content .el-scrollbar__wrap"
    >
      <backTop />
    </el-backtop>

    <!-- 加载更多 -->
    <InfiniteLoading :firstload="false" @infinite="handleLoadMore" />
  </el-scrollbar>
</template>
